What’s the best way to survive inside a falling elevator?
[T]he best way to survive in a falling elevator is to lie down on your back. Sitting is bad but better than standing, because buttocks are nature’s safety foam. Muscle and fat are compressible: they help absorb the G forces of the impact.
As for jumping up in the air just before the elevator hits bottom, it only delays the inevitable. Plus, then you might be squatting when you hit. In a 1960 Civil Aeromedical Research Institute study, squatting on a drop platform caused “severe knee pain” at relatively low G forces. “Apparently the flexor muscles … acted as a fulcrum to pry open the knee joint,” the researchers noted with interest and no apparent remorse.
So when the moment comes, lie down, tush to the ground, and big people, whatever your previous experience in social settings, just this once, you will be envied.